Cultivator.



no. 678,489. I I Patented July I6, 1901. T. .I. HUBBELL.

CULTIVATOB.

(Application filed. Apr. 17, 1901.)

(No Model.)

UNITED STATES PATENT GFFICE.

THOMAS J. HUBBELL, OF WATSONVILLE, CALIFORNIA, ASSIGNORTO DRUSILLAIIUBBELL AND \VILLIAM AMES, OF SAME PLACE.

GU LTIVATO R.

SPECIFICATION formingpart of Letters Patent No. 678,489, dated July 16,1901.

Application filed April 17, 1901- Serial No. 56,187. (No model.)

T0 aZZ whom it may concern.-

Be it known that I, THOMAS J. HUBBELL, a citizen of the United States,residing at Watsonville, county of Santa Cruz, State of California, haveinvented an Improvement in Cultivators; and I hereby declare thefollowing to be a full, clear, and exact description of the same.

My invention relates to improvements in apparatus forcultivating theland.

It consists of an adjustable tooth-carrying frame, with means by whichit may be expanded or contracted to adjust the apparatus for differentwidths of rows through which it is to travel.

My invention also comprises details of construction, which will be morefully explained by reference to the accompanying drawing, in which thefigure shows the cultivator ready for use.

A is the main longitudinal beam of my' apparatus, having fixed acrossthe front a short transverse bar 2.

3 is a similar bar slidable upon the rear end of the main beam A.

v 4 4 are bars having their front ends pivoted to the cross-bar 2, and 5represents similar bars having their rear ends pivoted to the slidablecross-bar 3.

The meeting ends of the bars at and 5 are pivoted together, so that whenthe transverse bar 3 is caused to slide upon the beam A by moving itrearwardly the meeting angles of 4 and 5 are drawn more nearly together,and by moving it forward these angles are correspondingly separated andthe width of the cultivator increased. These bars 4 and 5 carry thecultivator-teeth 6, which may be made of any suitable or desired formand interchangeable, if desired. Similar teeth may also be carried uponthe central main beam A. It will thus be seen that for the purpose ofcultivating between narrow rows, as of beets, the width of the apparatuscan be contracted'to suit the width of the rows, and if the rows arewide, as between the vines in vineyards, the width of the cultivator maybe correspondingly expanded. In order to operate these'devices, Ihaveshown a handle 7,

5o pivoted, as at 8, to a clamp 9, which is fixed to the main beam A bya bolt and lock-nut, as at 10, or some equivalent fastening.

11 represents links, the forward ends of which are pivoted to the lever7, as shown at 12, and the rear ends are connected with the slidable bar3, so that by pushing the lever 7 forward, while its lower end isconnected with the fixed clamp 9, the slide 3 will be drawn with it,thus expanding the tooth-bars at and 5, and by moving the lever 7backwardly the space between the tooth-bars will be correspondingly madenarrower.

In order to hold the slide and the toothbars at any desired point ofadjustment, I have shown a hook-lever 13, the rear end of which ishinged to the slide-bar 3. The front end carries a point or pin which isadapted to enter any one of a series of holes made in the beam A, andthus lock it in position. When it is desired to adjust thecultivatorframe, this hook is raised and disengaged from the holes bymeans of a rod 14, the lower end of which connects With the hook-bar 13and the upper end being slidable in guides beneath. The lever 7 has asuitable handle, as 15, by which it can be moved. When any adjustment ofthe cultivator has thus been made, if the angle of the lever-handle 7 isnot suitable for the convenience of the operator it can be adjusted bydisengaging the front of the clamp 9 and moving it either forward orbackward upon the beam A until the lever handle 7 stands at the desiredangle when the other parts have been properly adjusted. By theseadjustments I am enabled to provide a cultivator which is convenient fora great many different kinds of work.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination in a cultivator of a central longitudinal beam,tooth-bars having their meeting ends pivoted together, and their frontand rear ends connected with the main beam, means by which one of saidconnected ends may be moved upon the main beam to expand or contract thewidth of the cultivator, and means for locking the parts when ad justed.

2. The combination in a cultivator of a main draft-beam a fixedtransverse bar at the front, and a bar slidable at the rear, toothbarshaving their meeting. ends pivoted together, the front bars pivoted tothe fixed transverse bar and the rear bars to the slidable rear bar,means by which the slidable bar is moved toincrease or diminish thetransverse spread of the tooth-bars.

3. The combination in a cultivator of a main draft-beam a fixedtransverse bar at the front,a slidable transverse bar at the rear,tooth-bars having their meeting angles pivoted together, the front barspivoted to the front of the draft-bar and the rear bars to the slidabletransverse bar, alever-handle fulorumed upon the draft-bar, linksconnecting said lever with the rear slide whereby the latter may bemoved forward or back to expand or contract the spread of thetooth'bars.

4. The combination in a cultivator of a main beam, tooth-bars havingtheir front ends pivoted thereto and their rear ends pivoted to similartooth-bars, a slide movable upon the beam with which the rear ends ofthe second pair of tooth-bars are connected, a lever adjustablyfulcrumed to the beam, links conmeeting the lever with the sliding barand a locking-hook hinged to said bar adapted to engage holes in thebeam.

5. The combination in a cultivator of a main beam, tooth-bars pivoted toand diverging from the front end of the beam, other tooth-bars pivotedto the first pair having their rear ends pivoted to a. slide movableupon the main beam, a lever adjustably fulcrumed upon the main beam,links connecting said lever with the slide, a latch by which the slideis locked to the main beam at any desired adjustment, a rod connectedtherewith and slidable upon the handle whereby the latch may be releasedand the position of the tooth-bars changed.

In witness whereof I have hereunto set my hand.

THOMAS J. IIUBBELL.

Witnesses:

GEo. H. STR NG, S. II. NOURSE.

